Polaris TRAIL BOSS 325 2001 Manual page 110

ENGINE
CYLINDER HEAD INSTALLATION
Clean the gasket surfaces on the cylinder head and cylin-
der. Remove all traces of old gasket material.
Refer to disassembly photos.
1. Install the cam chain tensioner guide. Be sure bottom
end of guide is located properly in crankcase.
2. Install the two dowel pins and a new cylinder head
gasket.
3. Place the cylinder head on the cylinder. Apply a film of
engine oil to the cylinder head bolt threads and
washers, and hand tighten the bolts.
The following procedure must be used to torque the
cylinder head properly:
Torque all bolts evenly in a cross
pattern
*Torque bolts to 18 ft. lbs. (24.5 Nm)
*Loosen bolts evenly 180q (1/2 turn)
*Torque bolts to 11 ft. lbs. (14.7 Nm)
*From this point, tighten bolts evenly
90q (1/4 turn)
*Finally, tighten another 60q (1/6 turn)
4. Tighten 6mm cylinder base bolts to specification.
Cylinder Bolt Torque:
6mm - 5-6.5 ft. lbs. (7-9 Nm)
3.54
Torque in cross
pattern per procedure
Torque
5-6.5 ft./lbs.